Internal-combustion engine.



, s. WIEBRA INTERNAL GOMBUSTION ENGINE. .APPLICATION` ZEILED 00T. 2. 1905.

s. WIEBE. INTERNAL GOMBUSTION ENGINE.

APPLIOATIOH FILED 00T. 2, 1905. 966,972, Patented Aug. 9, 1910.

` 2 SHEETS-SHEETS.

WTNESSES:

UNITED srnrns PArnNr onnrcn smunn wINBE, or Nnw INTERNAL-GOMBSTION ENGINE.

To all whom it my comem:

Be it known that I, SIGURD WIEBE, a subject of the Crown of Sweden, and resident of the city, county, and State 'of New, York,

have invented certain lnew and useful Improvements in Internal-Combust1on Engines, of which the following is a specificapressure, which I introduce into the cylin er` after the gases have done their work and the discharge has been opened therefor,^so as to thoroughlyclean out the cylinder before I admit a fresh charge of gaseous mixture.

lFor introducingl the fresh charge quickl and positively, I employ va secondary cy inder and piston, using the o posite slde of the working piston forthe .s 'ght compression of air employed for scouring purposes.

\ My invention also consists in certain novel .details of constructlon and combination 'of parts, as will hereinafter be more vfully poin'tedout.

I will now proceed to describe an internal combustion vengine vembodying my invention,

'- and will then Apoint. out. the novel features A verse sectionfthrough one offthe'cylinders, at r1 ht anglesto the point "oflview Aorf-Figiv wit 1 and 8 are `supported by acrank casing-9,.-

inclaims; j v

In thedrawm s-F1 re- 1 1s a view 1n central vertical ongitutlinal-` section of a two-'cylinder engine embodying my inven-l tion.l Fig2n2 is a detail-viewin central trans# 1. ig. 3 is anendfview of the engine,- certain parts brokenaway v to'more clearly illustrate other parts. .Ei 4 is "arfview ,inl central vertical llongitudina section through a single cylinderlengine embodying my in.v

ventien. f I

The engine illustrated comprises twov ver trcal working cylinders f5 and6, with char 1 @p cyllnders 7 and" Starranged longitu i` 111 naly 4beneath same. Tlie'se` `cylinders 5'6' 7 Specication of Letters Intent.

Application filed Uctober 2, 1905. 'Serial No. 280,888.

4 crank vsha l l `Patented, Aug. 9, 191'0.

which carries and incluses the crank shaft 10. Reciprocating pistons 11 and 12 are suitably mounted in the cylinders 5 and 6, and corresponding pistons 13 and 14 are mounted to reciprocateA in the cylinders 7 and 8. The pistons 11 and 13 are connected together b a piston rod 15, and with, the 10, by means of a `pitman or connecting rod 16, while the pistons 12 and 1i are similarly connected together by means of a piston rod 17, and to the crank shaft 10 by'means of a connecting rod 18. The

lower ends of the cylinders 5 andl 6 are.

closed by meansv of a lower head 19, the piston-rodsl and 17 passin throu h suitable packing boxes 20 in t e sai heads. The lower ends of the cylinders 7 and 8 are o en.

I)21 designates an inlet for explosivesl gases, said inlet 21 being connected with a carbureter, or with other source of gas sup 1y, and passages l22 and 23 respectively ead from the said inlet 21 to the interior of cylinders `7l and 8. Inlet valves 24 and 25 conv trol the passages 22 and 23, and are oper ated by means of cams 2526 u on the crank Yonx, N. Y., AssIGNon oFfoNnmLr 'fro JOHN e.. QUINN; or

PHILADELPHIA, PENNsYLvANIA. y

shaft 10. The passages 22 an 23 also lead through cross-over conduits 27 and 28 respectively, toannular chambers 29 and 30 formed around the cylinders and 6. These chambers communicate through ports 31 to the interior of' the cylinders 5 and 6, such ports being just uncovered by the pistons 11 and 12, when in their lowest positions. Air is admitted Ito the said `cylinders through an -air inlet 32 to beneath the working, pistons and to annular `chambers "33` arranged around the cylinders,= the `chambers yin the ypresent instance-being located between the annular chambers x30 and .thecylinders 5 'and' 6.V yThese annular chambers, (if-which there is onefor each cylinder -communicate through 4ports 34: ,with the vcylinders 5 and 6 their `downward-\mov,emer'it a little ahead of exhaustports 355 ofthe -said cylinders` 5 and atpoints gjust-above. the ports'hlandnre henceuncovered by `the 'pistonsy 11 `and 12 in 6 are ,arranged-at. substantially thefupper :end ,of the said cylinders; the saidheighaust orts being controlled by means offexhust valves 36,.` Thel exhaustvalvesare operated through certain levers, rods etc.,by cams 37 uponuthe .Inain,v shaft, as `will 'be-readilylunv ention.

.movement a new char e will derstood. In Fig. 3 I have shown compound levers 38 and 39 between one of the cams 37 and its follower, in order to insure a rapld and extensive movement of the exhaust valve. The precise construction or arrangement of-these parts, however, is immaterial, and forms, per se, no part of my present 1nwhich is contained beneath the piston 11 and in the chamber 33 in communlcation therewith, will be slightly compressed, and gas will be drawn into the cylinder?l past the inletvalve 24, which is shown as Yhaving been opened by its cam 25 for this urpose. The charge thus drawn into the cy inder 7 will be nally delivered through the crossover conduit 27 into the chamber 29 of the cylinder 6 upon the return movement of the i piston 13. .Just before the piston 11 uncovers the ports 34 its exhaust valve 36 will be opened, permittlng the spent gases to exhaust down to' atmos heric pressure. Continued movement of t e iston will uncover the air inlet ports 34, a owing air, which "has been compressed toa slight degree beneath the piston and in the chamber '33, to rushy into the cylinder, expelling the remaining inert gases and thoroughly scouring the same. Inl its final downward movement, the piston will uncover the ports 31, so as to admit a fresh charge of gas under pressurefrom within the chamber 30 and which was delivered by the piston 14 in its upward movement.

ment of the pistons 11 and 13, the plstons 12 During the downward moveand 14 have been moving u ward, with the following results: Gas, w ich had been ldrawn into the cylinder 8 by the prior downward movement of its piston 14 (as above described, with reference to the downward movement of the piston 13 in the cylinder 7) will be forced through thepassage 23 and cross-over conduit 28 into the chamber 30, ready, to be taken in at the moment the iston 11 uncovers the ports 31, as above set orth. The iston 12, m its upward movement, rst c oses the ports 31 (the charge having previously entered therethrough into the cy inder 6), and then closes the ports 34. The exhaust valve 36 will have been closed by this time, and ,continued movement of the piston will compress the charge in the cylinder ready for the following power stroke. e engine being of the two-cycle type, every down stroke of each piston 11 and 12 is a. power stroke, and each up stroke prior to its power stroke.

arranged to charge the cylinder immediately above it, the on difference bein that in such case a check valve 37 is provired in the passage 22 leading tfrom the lower cylinder 7 to the annular chamber 30, surrounding the up er cylinder 5. This is necessary, because t e lower piston 13 will be moving in a direction to char e the upper cylinder dur- 1n the time the piston 11 in the upper cyliner is compressing a previous charge, and

This arrangement may be .em loyed for a multi-cylinder en e, but is a a ted also for a single cylin er engine which class of en ine is shown in Fi ."4. When the check va ve 37 is einploye a mechanically operatedinlet valve may be-dispensed with, the piston 13 creating a vacuum in the cylinder 7 upon its downward movement, whereby gas will rush in through a ort or passage 40 connecting with gas supp y, and 'uncovered at about the comp etion of the downward stroke of the said piston 13.

WhatI claim is:

1. In an internal combustion engine, the combination with a working cylinder provided with two annular chambers concentric therewith, and with separate inlets from said chambers to the interior of said cylinder, the one arranged above the other, of a piston in vsaid cylindeli arranged in its stroke to uncover said i ets, one of said chambers communicatin with the said cylinder at the rear of said piston, and having an air inlet, a charging cylinder and piston communicating with the other of said chambers, and a mechanically controlled exhaust for the Working cylinder.

`2. In an internal combustion engine the combination with a p of worling luralityl ycylinders and a plurahty of c arging cylinders, said workmg and chargin cylinders arranged in pairs, one in line wit the other, worklng pistons 'in sald working cylinders,

charging pistons in said charging cylinders connected with said working pistons, passages connecting the rear ends of said working cylinders with the forward ends thereof, and having air inlets, and passages connecting the charging cylinder beneath each working cylinder with another working cylinder,

the'admission from said 'passages to the said working cylinders being arranged to be uncovered by said working pistons in their forward or Workin movements, the former in advance of the atter, and exhaust passages for the working cylinders, arranged to be opened before either of the aforesaid passages are uncovered, and tobe closed before either of the aforementioned passages are covered.`

3. In an internal combustion' engine, theA combination with a plurality of working cylinders and a plurality of chargin cylinders, said working and charging cy nders arranged in pairs,rone in line with the other, working pistons in said workingcylinders, charging pistons in said charging cylinders connected with said working pistons, passages connecting the rear ends of said Workingl cylinderswith the forward ends 'thereof, and having air inlets, and passages connecting the charging cylinder beneath each working cylinder with another f Working cylinder, the admission from said passages to the said working cylinders being arranged to be uncovered by said working pistons in their forward or working movements, the

former in advance of the latter, and mechanically operated exhaust valves controlling exhaust from the front ends of the said working cylinders, and arranged to be opened' before either of the aforesaid passages are un covered.

4. In an internal combustion engine, the

combination with a plurality of Working cylinders and a plurality of charging cylinders, said working and charging cylinders arranged in pairs, one in line lwith the other, working pistons in said working cylinders, charging pistons in said charging cylinders connected with said working pistons, pasl sages connectin the rear ends of said working cylinders with the forward ends thereof, and having air inlets, and passages connecting the charging cylinder beneath each Working cylindery with another working'cylinder,

ders, said working and charglng'A cylinders arranged in pairs, one in line with the. other, working pistons in said working cylinders,

son

charging pistons in said charging cylinders connected with said working pistons, pasl sages connectin the rear ends of said Working cylinders with the forward ends thereof,y

and having air inlets, and passages connecting the char 'ng cylinder beneathv each workin cylin er with another working cylinder, t e admission from said passages to the said working cylinders being arranged tobe uncovered by said working pistons in their forward or working movements, the former in advance of the latter, mechanically operated inlet valves for the said charging cylinders, and mechanically operated exhaust valves controllin exhaust from the front .ends of said wor 'ng cylinders, and

.arranged to be opened before either of the aforesaid passages are uncovered.

` VSIGrURD WIEBE.

Witnesses: v

D. HOWARD Harwoon, y JN0. C. Quinn, 

